1 files changed, 147 insertions, 0 deletions
diff --git a/man-pages-posix-2003/man3p/shmget.3p b/man-pages-posix-2003/man3p/shmget.3p
new file mode 100644
index 0000000..8b9452e
--- /dev/null
+++ b/man-pages-posix-2003/man3p/shmget.3p
@@ -0,0 +1,147 @@
+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 
+.TH "SHMGET" 3P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" shmget 
+.SH PROLOG
+This manual page is part of the POSIX Programmer's Manual.
+The Linux implementation of this interface may differ (consult
+the corresponding Linux manual page for details of Linux behavior),
+or the interface may not be implemented on Linux.
+.SH NAME
+shmget \- get an XSI shared memory segment
+.SH SYNOPSIS
+.LP
+\fB#include <sys/shm.h>
+.br
+.sp
+int shmget(key_t\fP \fIkey\fP\fB, size_t\fP \fIsize\fP\fB, int\fP
+\fIshmflg\fP\fB); \fP
+\fB
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fIshmget\fP() function operates on XSI shared memory (see the
+Base Definitions volume of IEEE\ Std\ 1003.1-2001,
+Section 3.340, Shared Memory Object). It is unspecified whether this
+function
+interoperates with the realtime interprocess communication facilities
+defined in \fIRealtime\fP .
+.LP
+The \fIshmget\fP() function shall return the shared memory identifier
+associated with \fIkey\fP.
+.LP
+A shared memory identifier, associated data structure, and shared
+memory segment of at least \fIsize\fP bytes (see \fI<sys/shm.h>\fP)
+are created for \fIkey\fP if one of the following is true:
+.IP " *" 3
+The argument \fIkey\fP is equal to IPC_PRIVATE.
+.LP
+.IP " *" 3
+The argument \fIkey\fP does not already have a shared memory identifier
+associated with it and (\fIshmflg\fP &IPC_CREAT)
+is non-zero.
+.LP
+.LP
+Upon creation, the data structure associated with the new shared memory
+identifier shall be initialized as follows:
+.IP " *" 3
+The values of \fIshm_perm.cuid\fP, \fIshm_perm.uid\fP, \fIshm_perm.cgid\fP,
+and \fIshm_perm.gid\fP are set equal to the
+effective user ID and effective group ID, respectively, of the calling
+process.
+.LP
+.IP " *" 3
+The low-order nine bits of \fIshm_perm.mode\fP are set equal to the
+low-order nine bits of \fIshmflg\fP.
+.LP
+.IP " *" 3
+The value of \fIshm_segsz\fP is set equal to the value of \fIsize\fP.
+.LP
+.IP " *" 3
+The values of \fIshm_lpid\fP, \fIshm_nattch\fP, \fIshm_atime\fP, and
+\fIshm_dtime\fP are set equal to 0.
+.LP
+.IP " *" 3
+The value of \fIshm_ctime\fP is set equal to the current time.
+.LP
+.LP
+When the shared memory segment is created, it shall be initialized
+with all zero values.
+.SH RETURN VALUE
+.LP
+Upon successful completion, \fIshmget\fP() shall return a non-negative
+integer, namely a shared memory identifier; otherwise,
+it shall return -1 and set \fIerrno\fP to indicate the error.
+.SH ERRORS
+.LP
+The \fIshmget\fP() function shall fail if:
+.TP 7
+.B EACCES
+A shared memory identifier exists for \fIkey\fP but operation permission
+as specified by the low-order nine bits of
+\fIshmflg\fP would not be granted; see \fIXSI Interprocess Communication\fP
+\&.
+.TP 7
+.B EEXIST
+A shared memory identifier exists for the argument \fIkey\fP but (\fIshmflg\fP
+&IPC_CREAT) &&(\fIshmflg\fP
+&IPC_EXCL) is non-zero.
+.TP 7
+.B EINVAL
+A shared memory segment is to be created and the value of size is
+less than the system-imposed minimum or greater than the
+system-imposed maximum.
+.TP 7
+.B EINVAL
+No shared memory segment is to be created and a shared memory segment
+exists for \fIkey\fP but the size of the segment
+associated with it is less than \fIsize\fP and \fIsize\fP is not 0.
+.TP 7
+.B ENOENT
+A shared memory identifier does not exist for the argument \fIkey\fP
+and (\fIshmflg\fP &IPC_CREAT) is 0.
+.TP 7
+.B ENOMEM
+A shared memory identifier and associated shared memory segment shall
+be created, but the amount of available physical memory
+is not sufficient to fill the request.
+.TP 7
+.B ENOSPC
+A shared memory identifier is to be created, but the system-imposed
+limit on the maximum number of allowed shared memory
+identifiers system-wide would be exceeded.
+.sp
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.LP
+None.
+.SH APPLICATION USAGE
+.LP
+The POSIX Realtime Extension defines alternative interfaces for interprocess
+communication. Application developers who need to
+use IPC should design their applications so that modules using the
+IPC routines described in \fIXSI Interprocess Communication\fP can
+be easily modified to use the alternative
+interfaces.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIXSI Interprocess Communication\fP, \fIRealtime\fP, \fIshmat\fP(),
+\fIshmctl\fP(), \fIshmdt\fP(), \fIshm_open\fP(), \fIshm_unlink\fP(),
+the Base Definitions volume of IEEE\ Std\ 1003.1-2001, \fI<sys/shm.h>\fP
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group. In the
+event of any discrepancy between this version and the original IEEE and
+The Open Group Standard, the original IEEE and The Open Group Standard
+is the referee document. The original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .